Apparatus for hold and bend springs.



w. E. 5mm. jaPPARATUS TO HOLD AND BEND SPRINGS.

APPLICA'HON FILED XML 23 19M}.

1,294,71; Patented Feb. 11,1919.

p {Janna hit WALTER EDWARD EVERITT, 0F SEATTLE, WASHINGTON.

APPARATUS TO HOLD AND BEND SPRINGS.

Specification of Letters Patent.

Patented Feb. 11, 1919.

Application filed January 23, 1918. Serial No. 213,407.

To all whom it may concern:

Be it known that I, WALTER E. EvERI'r'r,

a citizen of the United States, residing at 727 Belmont Place, Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Apparatus to Hold and Bend Springs; and I do herebydeclare the following to be a full, clear, and exact descrip-' tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to apparatus for bending and forming springs, and flat leaves" of springs which are to be given a curved form, for vehicles or other organizations, and further relates to means for supporting and holding springs while the same are being constructed or formed by the operators using the apparatus;

It is an object of the invention to provide an apparatus for holding leaves of springs in a fixed position at one point while the other portions of a spring leaf are being bent into the desired shape by other portions of the apparatus; another object is to provide for the accurate, rapid and facile bending of the leaves, and another object is to provide simple, easily applicable, variously adjustable compactly organized means for these purposes. 7

To illustrate an embodiment of the invention the accompanying drawings are presented, in which:

Figure 1 is a side view of the apparatus,

, Fig. 2 is an end view,

Fig. 3 is a side view of the'bending lever,

Fig. 4 is a detail of the forming roller,

Fig. 5 is the holding clamp in detail,

Fig. 6 is a top plan of a side supporting bracket. i

Like numerals, on the several figures, represent like parts of the apparatus.

A central post or support 1, is held 1n place by any suitable means, as angle braces 2; 3-3 are side arms, one on each slde of the post 1, connected theretoby a pivot pin 5 with large heads 6, which extend over the arms which are connected at a handle part 8 at the top; the pin 5 passes through elongated apertures 4, in arms 8, to permit the latter to move to different positions as hereinafter described.

Upon the top of the post 1 is fixed a cone-shaped extension or part 9, the point of which enters the center hole 40 which is usually provided inmaster springs, one of which is shown at 41. The said point further extends above the surface of the master spring or templet sufficiently to reach into the center hole or cavity 42 which is commonly provided in the steel straps one of which is shown at 41 which are to be formed into leaf springs.

Near the base of the handle 8 a pin 14 extends through both sides, and on the pin rides freely a short lever 15, with a turned up handle 22 at one end, carrying a slidable pin 16 in a suitable hole in the outer end. The pin 16 is prevented from falling from its position by a nut 18 and is normally pressed downward by a coil spring 17 which encircles the pin 16 and is held between the bottom of the lever 15 and the shoulder of the yoke 13 into which the lower portion of pin 16 terminates. In the yoke 13 is a roller 20 which turns freely in such position on its end axles 21, and is provided around its central portion with a groove 20 to receive or pass over the rib 43 ordinarily found on the straps designed to be bent into springs, and intended to hold the several leaves in proper assembled position for a completed spring of several leaves.

'A small flat spring 23, fixed to the top of the handle 22 tends to hold the twin handles 22 and- 8 separated and by tilting up lever 15, thereby keeping the roller 20 elevated above the spring leaf 41 being rolled except when the operator desires otherwise.

At a suitable point in the side-arms 3-3,

are fixed roller bearing pins 10 which on their inner ends carry flattened, spaced heads 11, and between the heads 11 and the inner sides of the arms 3 are placed freely turning bushings or supporting rollers 10, 10. The heads 11, 11, and rollers 10 are so spaced apart that the cone point 9 may pass between them as the connected arms 3 are swung on the pin 5. The rollers form a bearing beneath the master leaf 40 and any additional spring leaves which may be placed thereupon, the rollers 10 turning on the pins while arms 3 are moved to and fro for forming the spring leaves.

On one side of post 1 are fixed brackets 24, with slots 25, and through the slots 25 is a movable curved support 26, with a plurality of teeth 28 along its concave side thereof, which teeth may be used as means for engaging the top bracket 24 and to so hold the support 26 at any desired height or position. The top portion of the support 26 is spread into a yoke 29 with a pin 31 therethrough which holds in place a lug 30 of a lower section 30" of a clamp, of which 32 is an end portion; the top and opposite end of the clamp being formed by a similar member 35. The width of clamp is adjusted by threaded ends 33 and 36 which pass through eyes in opposite members, carrying nuts on their threads outside all members. The top plate of the upper section 35 is preferably flattened at its center and carries a thumb screw 38. The screw is readily moved up or down to bind or loosen one or more leaves of the spring as may be desired, which are extended into the clamp.

On the opposite face of the post 1 is an auxiliary curved support 27, with teeth 28, engaging supporting brackets 25, but without the clamping member carried on the support 26, the use of the support 27 being only necessary when it is desired to use thesupports 26 and 27 to hold some spring or work in some desired position upon the point 9 and generally not when the leaves are being bent into shape.

In operating the apparatus, the master spring leaf 41 having been previously formed into the desired curve, is first placed in position over the centering pins 9 which extends into the said central hole 42 provided in the upper leaf 41, and one end of the latter is placed between the member 31 and the screw 38, in the clamp 35, then the new strap or heated spring leaf 41:1 which is to be formed to correspond with the top side of the master leaf 4:1, is placed in position so that the tip of pin 9 rests in the center hole of the unformed leaf 41, the clamp members placed around the ends of leaves,v and the screw 38 tightened. If the new strap 41* is straight it will be necessary to throw, by the handle 8, the lever 33 over near the clamp 35 until the screw is tightened, and thereupon the operator grasps the two handles 8 and 22 and compresses the roller 20 firmly against the new leaf 4:1 and swings the lever 3-3 with suitable pressure until the new leaf is rolled downto exactly conform to the surface of the master leaf 41. The slot 4 in the base of the arms 3 permits the lever to rise and fall as may be desired and the adjustable support 26 may be placed at any desired position to secure the proper curve or bend in the springs, as they are made.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, 7

to a master leaf or templet, a centering pin on the top of the post for positioning the master and superposed leaves, and means embracing the post and movable thereoverfor bending and forming leaves to conform to the master leaf.

2. In an apparatus for shaping leaves of laminated springs, a post, guide brackets on its sides, supports adjustably mounted on said brackets, means on the post for positioning the .master and superposed spring leaves, and holding means on one of said supports, comprising a clamp for embracing agroup of leaves adjacent one end, and forming means pivoted at the bottom of the post and movable thereove'r from end to end of the spring.

3. In an apparatus for forming spring leaves to a master, means for alining the leaves of the pile, means for clamping the pile at one end, rolling means having free floating movement the length of the spring so as to follow varying paths determined by the differently shaped master springs or templets, said means including a lever slotted at its lower end and a fixed fulcrum engaged in the slot of the lever.

4:. In an apparatus for forming spring leaves to a master, means for alining the leaves of the pile, means for clamping the pile at one end, and rolling means having free floating movement, so as to follow varying paths determined byv the diflerently shaped master springs or templets, the rolling means including upper and nether separable presser and follower rolls and a freely vertically movable lever operable past said alining means and carrying the rolls at its upper end.

5. In an apparatus for forming spring leaves to a master, a center post having a leaf centering device, brackets at the sides of the post and adjustable toothed supports for the ends of the spring pile, one of said end supports having means for clamping the leaves, the teeth of said supports selectively engageable with parts on the brackets, and means for bending the leaf to a master on the supports.

In testimony whereof I aflix ture January 11th, 1918.

WALTER EDWARD EVERITT.

Washington, D. G. 

